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O. W. HOBBS.

MACHINE FOR STAYING THE ANGLES OF PAPER BOXES. No. 379,162. Patented Mar. 6,-1888.

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O. W. HOBBS.

MACHINE FOR STAYING THE ANGLES OF PAPER BOXES.

No. 379,162. Patented Mar. 6, 1888.

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0. w. HOBBS. MACHINE FOR STAYING THE ANGLES OF PAPER BOXES. Nol 379,162. 7 Patented Mar. 6, 1888.

N: PETERS. qhbuflmw nm Washington, D. c.

UNITED STATES PATENT OFFICE. S

CLARENCE W. HOBBS, OF LYNN, MASSACHUSETTS.

MACHINE FOR STAYING THE ANGLES OF PAPER BOXES.

SPECIFICATION forming part of Letters Patent No. 379,162, dated March 6, 1888.

Application filed April 28, 1887. Serial No. 236.488. (No model.) Patented in England August 2, 1887, No. 10,638.

To all whom, it may concern.-

Be it known that I, CLARENCE W. HOBBS, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Machines forStaying the Angles ofPaper Boxes, (for which [have obtained a patent in Great Britain, No. 10,638, dated August 2, 1887,) of which the following is a specification.

My invention relates to mechanism for staying the angles of paper boxesand box-covers, the type of machine being that set forth in my application for Letters Patent, May 29, 1886, Serial No. 203,653.

r The invention consists in the several novel features of construction and new combinations of parts hereinafter fully set forth, and definitely pointed out in the claims.

In the-accompanying drawings, Figure 1 is a face elevation of the machine. Fig. 2 is a vertical section from front to rear, the section plane passing through the vertex of the angle of the box-support. Fig. 3 is a partial section in a plane parallel to that of Fig. 2. Fig. 4 is a detail perspective of the box-support. Fig. 5 is a vertical transversesection of the boxsupport taken on the line x 00, Fig. 2, looking in the direction of the arrow. Fig. 6 is a ver tical section of one of theprong-bearing plates with its housing. Fig. 7 is adetailview showing a modified construction. Fig. 8 is a view of a portion of the machine-frame, showing the wire-feed roll and the splitring brake applied thereto.

In the said drawings the reference-numeral 1 designates the frame of the machine, in which the power-shaft 2 is supported, carrying four cams, of whichI show three only in this application, by which the several movements are communicated to the operative elements. The general construction and arrangement of these parts is not essentially different from like features shown in my said pending application, save in those parts wherein I have hereinafter pointed out a characteristic construction.

In the central portion of the frame 1 is pivotally mounted a lever, 7, carrying a head, 8, which isprovided with a head or part, 10, the head 8 having a slot, 9, within which the clinchers are arranged. The said slot 9 is out transverscly, and provides space for the head or part 10 on the head 8, the former having an angular surface, on which rest the clincherarmsll, carried by a T-head, 12, which is reciprocated by a lever, 13, deriving its movement from a cam, 14, on the power-shaft 2.

It should be borne in mind that the leverarm 15, from which the wire-feeding mechanism is actuated, operates through the same means as in my former application.

The lever 7, carrying the head 8, is fulcrumed upon a pivotal axis, 17, which passes through ears 18 on the lever-arm. On the rear extremity of the latter is journaled a frictionwheel, 19, on which the operatingcam has bearing, and beneath the end of the lever arm is placed a spring, 20, by which the box support or shell 21 is dropped after each effective action of the cam, which acts upon the friction-roll 19. v V

The head 8, carried by the forward extrcmity of the lever 7, is of angular form in front elevation, the angle being of ninety degrecs, and upon the supporting portions of said head is mounted the shell or plate 21, having fastening-screws 22 and slots 23 upon each side of the angle, within which slots the clinchers move, as hereinafter described.

Upon shoulders 24, lying upon each side of the angular head 8 and forming a solid portion of the machineframe 1, are mounted plates 25, which project forward over and in parallelism with the angular faces of the shell 21, the outer extremity of each plate 25 having an extension, 26, which partly overlies one of the slots 23. On each of these plates 25 is mounted a block or housing, 27, through which is formed a channel or opening, within which 1 intro duce a steel wire, 28, having its axis lying in the same vertical plane with the slots 23. The extremity of each wire 28 is bent downward at an angle to the plate 25 of ninety degrees, and the bent end or prong 29 extends through a slot. 30, formed in the supporting-plate-25, and thence said prong passes into one of the slots 23, formed in the shell-support 21. The said prong passes downward or inward far enough to project beyond the outer surfaces of the shell 21, when the latter is raised, and it is adjusted at such point that the staple or I an intermittent movement.

hub of this feed-roll is carried a metallic split stay, when formed, will enter the stock at the points or openings produced by the, said prongs. By means of the rigid attachment of the plates 25 the steel wires 28 may be adjusted as circumstances may require, and each one is locked or fastened at any desired point by a set-screw, 31.

The clinching-lever 13, which carries the clinching-rolls 33, is essentially the same as that shown in. my pending application .of May 29, 1886, Serial No. 203,653. The cams actuating these parts also are not substantially different from those shown in said application.. It will readily be understood that in place of mounting the prongpieces 28 on a rigid boxsupporting shell, as in my former case, Iplace them upon the angular shoulders 24, which form part of the rigid frame of the machine,

I leaving the supportingshell 21 free to vibrate.

On the shaft 2, which carries the cams opcrating the-clinchers and vibrating the shellsupport, is a cam, 16, which operates the arm 15, by which the wire-feeding roll 36 is given Over the rear ring, 36, lined upon its inner or concave surface witha leather cushion which has bearing upon the surface of the hub of thefeed roll. The two ends of the split ring 36 are brought. together and fastened by a screw, 36, Fig. 8, drawing the ring against 1 he hub with anysuitablefriction. Theprojeeting united ends ofthe ring may rest against or uponthe adjacent part of the machine-frame to prevent rotation on the part of the brake when the feedroll revolves, as already shown in Figs. 1 and 8. A somewhat similar brake, 37, is placed upon the periphery of one of the cams on the shaft 2. This brake consists of a metal strap, 37, which has a diminished part, 39, which passes through an aperture in the bed-plate of the machine, or an attachment to the machineframe, and upon its threaded extremity below the said part is a set nut, 40, through which the tension of the brake upon the cam is varied. The function of the said brake is to keep the motion of the machine steady and to prevent all possibility of backlash.

I make no claim in this application to the device last named.

The general operation of the machine needs no special description. The die and die-carrier act in precisely the same manner as in my former invention, and the anvil also is operated in like manner.

In place of the construction shown in Fig. 6 I may extend the housing 27 to the end of the plate 25 and tap the set-screw into it, as shown in Fig. 7, thereby giving a convenient 3 means for adjusting the prong. In some respects I regard this arrangement as preferable.

Upon the end of the arm 7 the friction-roll 19 is journaled upon an adjustable support, 42, moving in an elongated opening, 43, in the end of the lever and adjusted by a set-screw,

41, whereby the stroke of said lever may be varied in such manner as to bring the box- I supporting head 8 into exactly the position required. The journal support 42 is flattened,

so that it cannot turn in the slot 43, and re-' their pointed ends overhanging the slots in said shell, and means for vibrating said shell toward and from the stay-forming dies, substantially as described. I I

2. The combination, with the wire feeding mechanism, substantially as describedand the dies, wherebythe wire is formed into stays, of

a vibrating angular shell, whereby the box is supported, supporting-plates carried by the rigid parts of the machine-frame, and adjustable prongs mounted in said supportingplates, wherebythe apertures are formed in the stock and the ends of the stays guided, substantially as described.

3. The combination, with the vibrating shell-support and the cam operatingits carrying-lever, of rigid supporting-plateshaving blocks, pronged wiresmounted therein and havingtheir pointed ends overhanging slots in theshell-support, and set-screws tapped through said blocks and fastening in place, substantially as described.

4. The combination, with the power-shaft carrying the cams by which the operative parts are moved, of a vibrating lever fut crumed upon the machine'frame, a cam actuating said lever, an angular shell support carried by said lever, and clinching devices operating within said shell to upset the ends of the metallic stays, substantially as described.

5. Theeombination,with the vibratingshellsupport, of rigid plates mounted upon angular shoulders on the machine-frame, steel wires adjustably mounted in blocks on said plates, set-screws tapped through said blocks and bearing upon said wires, and mechanism, substantially as described, for feeding the wire forming the stay and clinching the ends of the same, substantially as described.

In testimony whereoflaffix my signature in presence of two witnesses.

CLARENCE \V. HOBBS.

said wires \Vitnesses:

CHARLES E. GRINNELL, JOHN H. RENIGER. 

